Browse Prior Art Database

New Thick Film or Solid Form of Cu3Ge

IP.com Disclosure Number: IPCOM000110328D
Original Publication Date: 1992-Nov-01
Included in the Prior Art Database: 2005-Mar-25
Document File: 1 page(s) / 52K

Publishing Venue

IBM

Related People

Brady, MJ: AUTHOR [+4]

Abstract

This article discloses a method by which solid Cu3Ge (copper-germanide) may be manufactured, and the constituents that are used to produce the powder, solid or thick-film form of Cu3Ge.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 68% of the total text.

New Thick Film or Solid Form of Cu3Ge

       This article discloses a method by which solid Cu3Ge
(copper-germanide) may be manufactured, and the constituents that are
used to produce the powder, solid or thick-film form of Cu3Ge.

      First, a powder is manufactured.  The powder consists of fine,
micron-size or smaller, particles of copper intermixed with germanium
particles of the same dimension, in the atomic ratio of three copper
atoms for every germanium atom.  The powder is such that the
particles of the two elements are embedded within each other.  The
powder may be manufactured by processing coarse constituent materials
in a ball-milling machine.  The milling operation may be carried out
in the presence of an organic carrier fluid, if desired.

      The dry embedded powder may then be transformed into a powder
of Cu3Ge by heating at an elevated temperature, typically over 200oC
in the absence of oxygen or in a reducing gas atmosphere.  The dry
embedded powder may also be transformed into a solid by pressing by
mechanical means into a desired shape and then processing, as
described above.

      In addition, a paste is disclosed.  The paste consists of the
above embedded powder suspended in an organic carrier fluid which may
contain solder flux.  The embedded powder may be milled in the
presence of the fluid or mixed into the fluid after the milling
operation.  The process by which this paste may be employed is as
follows: The paste may be...